Answers

Subtract 6/9 from 4/7

4/7 - 6/9 is -2/21.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 7 and 9 is 63
   
   Next, find the equivalent fraction of both fractional numbers with denominator 63
2. For the 1st fraction, since 7 × 9 = 63,
   4/7 = 4 × 9/7 × 9 = 36/63
3. Likewise, for the 2nd fraction, since 9 × 7 = 63,
   6/9 = 6 × 7/9 × 7 = 42/63
4. Subtract the two like fractions:
   36/63 - 42/63 = 36 - 42/63 = -6/63
5. After reducing the fraction, the answer is -2/21

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